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Vitamin B 6 dietary intake: trends from the 1999‐2000, 2001‐2002 and 2003‐2004 National Health and Nutritional Examination Surveys (NHANES)
Author(s) -
Rybak Michael E.,
Jain Ram B.,
Pfeiffer Christine M.
Publication year - 2007
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.21.5.a346
Subject(s) - national health and nutrition examination survey , vitamin , dietary reference intake , medicine , population , caloric intake , food intake , reference daily intake , zoology , biology , endocrinology , obesity , nutrient , environmental health , ecology
Vitamin B 6 functions as a coenzyme in the metabolism of amino acids, glycogen, and sphingoid bases. To establish dietary vitamin B 6 intakes representative for the U.S. population we analyzed data from the National Health and Nutrition Examination Surveys (NHANES) for 1999–2000, 2001–2002, and 2003–2004 (day 1 intake only). Vitamin B 6 intakes were expressed as total daily intake in mg, mg/1000 kcal, and mg/g dietary protein intake. Results were stratified by sex, race/ethnicity and age. (Geometric) mean intakes (mg) for vitamin B 6 (95% CI) were consistent across the three survey periods (1.47 [1.40,1.55] for 1999–2000, 1.51 [1.44,1.57] for 2001–2002, and 1.52 [1.46,1.59] for 2003–2004). B 6 intake (mg) was consistently higher in males (1.70 [1.63,1.78] for 1999–2000, 1.77 [1.69,1.84] for 2001–2002, and 1.78 [1.72,1.85] for 2003–2004) relative to females (1.27 [1.20,1.35] for 1999–2000, 1.28 [1.21,1.34] for 2001–2002, and 1.30 [1.23,1.37] for 2003–2004), however, this difference did not exist when intake was expressed relative to caloric or dietary protein intake, suggesting that the difference arises from a difference in total food consumption and not differences in food choices. Similarly, mean B 6 intakes (mg) were substantially lower in persons ≤5 years of age than in the other age groups examined (6–19, 20–39, 40–59 and ≥60 years of age), but not when expressed relative to caloric or dietary protein intake.